JP3773799B2 - Recording / playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording / reproducing apparatus, and more particularly to a recording / reproducing apparatus that is applied to, for example, a hard disk video recorder and reproduces the broadcast program in parallel with the recording of the broadcast program.
[0002]
[Prior art]
The hard disk video recorder uses a hard disk excellent in random access as a recording medium. Furthermore, the hard disk video recorder has a chasing playback function for playing back the broadcast program in parallel with the recording of the broadcast program by taking advantage of this random accessibility. Therefore, even if the program is being recorded at the time of going home, for example, the program can be enjoyed from the beginning without stopping the recording.
[0003]
[Problems to be solved by the invention]
However, if the recording of the program is started in response to a real-time recording operation and there is another program reserved for recording, real-time recording is forcibly terminated at the broadcast start time of the reserved program. It is necessary to shift to recording of reserved programs. Then, the following problems occur when real-time recording ends before catching up with the actual broadcast scene. That is, after the reserved recording is started, the continuation of the program can be viewed by the tuner of the television receiver, but a blank is generated between the scene being reproduced and the scene being actually broadcast. Since this blank portion has already been recorded, it can be confirmed after the scheduled recording is completed, but this will break the flow of the story.
[0004]
Therefore, a main object of the present invention is to provide an image recording apparatus capable of reproducing a recorded program in response to a real-time recording operation without breaking the flow of the story.
[0005]
[Means for Solving the Problems]
The present invention provides a first recording start means for starting recording of a first broadcast program in response to a real-time recording operation, and the first broadcast in response to a playback operation when the recording of the first broadcast program is being performed. Reproduction means for reproducing the program, comparison means for comparing the broadcast start time of the second broadcast program reserved for recording with the current time, and based on the comparison result of the comparison means, the first time before the broadcast start time. Fast-forward playback means for fast-forward playback of the first broadcast program at a speed that the playback scene of the broadcast program catches up with the real-time broadcast scene of the first broadcast program, and the playback scene of the first broadcast program catches up with the real-time broadcast scene A recording end means for ending the recording of the first broadcast program after the recording, and a playback for ending the playback of the first broadcast program before the broadcast start time after the recording end means ends the recording of the first broadcast program. End hand , And a second recording start means for starting the recording of the second broadcast program when it is the broadcast start time, a recording and reproducing apparatus.
[0006]
[Action]
When real-time recording operation is performed, recording of the first broadcast program is started by the first recording start means. Further, when a playback operation is performed during recording of the first broadcast program, the first broadcast program is played back by the playback means. The comparison means compares the broadcast start time of the second broadcast program reserved for recording with the current time, and the fast-forward means selects the first broadcast program based on the comparison result before the broadcast start time of the second broadcast program. Fast-forward playback is performed so that the broadcast scene of the broadcast program catches up with the real-time broadcast scene. When the playback scene of the first broadcast program catches up with the real-time broadcast scene of the first broadcast program, the recording end means ends the recording of the first broadcast program, and after the recording of the first broadcast program ends, the broadcast start time is reached. Previously, all playback of the recorded first broadcast program is ended by the playback end means. Thereafter, when the broadcast start time of the second broadcast program is reached, the recording of the second broadcast program is started by the second recording start means.
[0007]
Preferably, a time difference from the playback scene to the broadcast scene in real time is detected when a predetermined time before the broadcast start time is reached, and the fast-forward playback speed is determined based on the detection result. May be.
[0008]
Further, when fast-forward reproduction is performed by the fast-forward reproduction means, the reproduction operation may be invalidated by invalid means.
[0009]
Furthermore, when fast-forward reproduction is performed by the fast-forward reproduction means, a predetermined warning may be generated by the generation means.
[0010]
【The invention's effect】
According to the present invention, the broadcast start time of the second broadcast program reserved for recording is compared with the current time, and the first broadcast program is compared with the first broadcast program before the broadcast start time of the second broadcast program based on the comparison result. Since fast playback is performed so that the playback scene of the broadcast program catches up with the real-time broadcast scene, a blank is inserted between the scene of the first broadcast program being played and the scene of the first broadcast program being broadcast. The first broadcast program can be continuously viewed by the television receiver without causing it.
[0011]
The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.
[0012]
【Example】
Referring to FIG. 1, a hard disk video recorder 10 of this embodiment includes a tuner 12 that inputs a high-frequency television signal captured by an antenna ANT. When receiving a channel selection instruction from the CPU 20, the tuner 12 selects a desired channel and outputs a baseband television signal of the selected channel. When the recording command is given from the CPU 20, the recording system 14 compresses the television signal output from the tuner 12 by the MPEG method, and records the compressed data stream on the hard disk 16 by the FAT (File Allocation Table) method. . When the reproduction command is given from the CPU 20, the reproduction system 18 reproduces the data stream recorded on the hard disk 16, and expands the reproduced data stream by the MPEG method. As a result, the baseband television signal is decoded, and the decoded baseband television signal is output to the television receiver 30.
[0013]
In the television receiver 30, the CPU 38 controls the tuner 32 and the switch SW1 in response to an operation of the remote control device 40 or a request from the CPU 20 on the hard disk video recorder 10 side. That is, when a desired channel is selected by the remote control device 40 or a channel selection request for the desired channel is given from the CPU 20, the CPU 38 sets the switch SW 1 to the tuner 32 side and sets the desired channel to the tuner 32. Command the tuning. On the other hand, when “external input” is selected by the remote controller 40, the CPU 38 sets the switch SW1 to the hard disk video recorder 10 side.
[0014]
When receiving a channel selection command, the tuner 32 inputs a high-frequency television signal from the antenna ANT and outputs a baseband television signal of a desired channel. The signal processing circuit 34 performs predetermined signal processing on the baseband television signal given from the tuner 32 or the hard disk video recorder 10 through the switch SW 1, and outputs the processed video signal to the display 36. As a result, a video reproduced by the hard disk video recorder 10 or a real-time broadcast video is displayed on the display 36.
[0015]
The CPU 20 of the hard disk video recorder 10 is equipped with a real-time OS such as iTRON, and controls the tuner 12, the recording system 14, and the playback system 16 according to mutually independent routines. Specifically, the tuner 12 and the recording system 14 are controlled according to the routine shown in FIG. 3, and the reproduction system 18 is controlled according to the routines shown in FIGS.
[0016]
First, referring to FIG. 3, it is determined in step S1 whether or not a real-time recording start operation has been performed, and in step S5 it is determined whether or not a reserved recording operation has been performed. When the operator selects a desired channel with the cursor key 22h of the operation panel 22 shown in FIG. 2 and presses the recording key 22d, the process proceeds from step S1 to step S3, and the tuner 12 and the recording system 14 select the desired channel. Command each start of real-time recording. The tuner 12 outputs a baseband television signal of a desired channel, and the output baseband television signal is recorded on the hard disk 16 by the recording system 14 in the MPEG system.
[0017]
When the operator presses the reservation key 22 shown in FIG. 2, YES is determined in step S5, and recording reservation processing is performed in step S7. Specifically, the reservation setting is guided through the LCD 22j, and the reserved recording start time, the reserved recording end time, and the reserved recording channel input by the cursor key 22h and the enter key 22g are stored in the memory 20a. When the recording reservation process is completed, the process proceeds to step S9, and 20 minutes before the reserved recording start time is set as the check time. The check time will be described later.
[0018]
When the process of step S3 or step S9 is completed, it is determined in step S11 whether or not a reserved program exists, and whether or not the current time is the reserved recording start time is determined in step S13. If YES is determined in both steps S11 and S13, the process proceeds to step S15. If either NO is determined in either step S11 or S13, the process proceeds to step S25.
[0019]
In step S15, it is determined whether real-time recording is being executed. If “NO” here, the process proceeds directly to the step S19 to start the reserved recording, but if “YES”, the real-time recording is ended in a step S17 and then the reserved recording is started in a step S19. By the processing in step S17, the recording system 14 ends the recording processing currently being executed. In the reserved recording at step S19, the tuner 12 is instructed to select a reserved recording channel, and the recording system 14 is instructed to start the recording reservation. The tuner 12 outputs a baseband television signal of a reserved recording channel, and the recording system 14 records the output baseband television signal on the hard disk 16 by the MPEG method.
[0020]
In step S21, it is determined whether or not the current time has reached the reserved recording end time. If YES, the recording system 14 is commanded to end the reserved recording in step S23. The recording system 14 stops the recording operation, and the recording of the reserved broadcast program on the hard disk 16 is completed. When the process of step S23 is completed, the process returns to step S1.
[0021]
In step S25, as in step S15, it is determined whether real-time recording is being executed. If NO, the process directly returns to step S1. On the other hand, if it is YES, it will progress to step S27 and will determine the presence or absence of real-time video recording end operation. When the operator presses the stop key 22e on the operation panel shown in FIG. 2, it is determined YES in this step, and the recording system 14 is commanded to end real-time recording in step S29. The recording system 14 ends the recording operation, and thereby the recording of the broadcast program ends. When the process of step S29 is completed, the process returns to step S1.
[0022]
Subsequently, control of the reproduction system 18 will be described with reference to FIGS. 4 and 5. First, in step S31, it is determined whether or not a reproduction operation has been performed. If YES, normal reproduction is started in step S33. In step S31, YES is determined when a desired program is selected by the reproduction key 22a and the cursor key 22i shown in FIG. 2 and the determination key 22g is pressed. In step S33, the playback system 18 is commanded to perform normal playback of the selected program. The playback system 18 detects the stream data of the selected program from the hard disk 16 with reference to the FAT, and plays back the detected stream data at a normal speed. The reproduced base television signal is output to the television receiver 30. If the switch SW1 is set on the hard disk recorder 10 side, an image based on the reproduced baseband television signal is displayed on the display 30.
[0023]
In step S35, it is determined whether or not there is a stop operation. If the operator presses the stop key 22e shown in FIG. 2, the determination is YES, and the playback system 18 is commanded to stop playback in step S37. The playback system 18 stops the playback of the stream data, thereby interrupting the display of the playback video. When the process of step S37 is completed, the process returns to step S31.
[0024]
If “NO” in the step S35, the process proceeds to a step S39 to determine whether or not a special reproduction operation is performed. If the operator operates the fast-forward key 22b or the rewind key 22c, it is determined YES, and in the subsequent step S41, the playback system 18 is instructed to perform fast-forward playback or rewind playback. The playback system 18 switches the playback mode from normal playback to fast forward playback or rewind playback. As a result, the fast forward video or rewind video is displayed on the display 36. In step S43, it is determined whether an operation for canceling special playback has been performed. When the operator operates the reproduction key 22a, it is determined YES, and the reproduction system 18 is instructed to perform normal reproduction in step S45. The playback system 18 returns the playback mode from special playback to normal playback. The display 36 also returns from the fast forward video or the rewind video to the normal playback video.
[0025]
If the process of step S45 is completed or if NO is determined in step S39, the above-described determination process related to real-time recording is performed in steps S47 to S53. In step S47, it is determined whether real-time recording is being executed. In step S49, it is determined whether the program being reproduced is the same as the program being recorded. In step S51, it is determined whether there is a recording reservation. In step S53, it is determined whether the current time is after the check time.
[0026]
If any one of steps S47 to S53 is determined to be NO, the process returns to step S35. On the other hand, if YES is determined in all of steps S47 to S53, the process proceeds to step S55, and a time difference between the scene being reproduced and the actual broadcast scene is detected. In the subsequent step S57, the catch-up playback speed and the catch-up playback start time are determined based on the detected time difference and the remaining time until the reserved recording start time. The catch-up playback speed is a speed at which the playback scene catches up with the actual broadcast scene at a time earlier than the scheduled recording start time. Therefore, the later the catch-up playback start time is delayed, the faster the catch-up playback speed is.
[0027]
Since the processes of steps S55 and S57 are executed only after the check time, the check time can be said to be a reference time for calculating the catch-up playback speed and the catch-up playback start time.
[0028]
In step S59, it is determined whether or not the current time has reached the catch-up reproduction start time. If NO, the process returns to step S35. On the other hand, if YES, in step S61, the reproduction system 18 is instructed to catch up, and an OSD signal for warning display is given to the reproduction system 18 in step S63.
[0029]
The playback system 18 fast-forwards and plays back the stream data according to the catch-up playback speed determined in step S57, and multiplexes the OSD signal provided from the CPU 20 with the played baseband television signal. The display 36 displays a program video that is fast-forwarded at the determined catch-up playback speed and a warning message that “The scheduled recording start time is approaching, so catch-up playback will start”.
[0030]
In step S65, it is determined whether or not the playback scene has caught up with the actual broadcast scene. In step S71, it is determined whether or not a normal playback operation has been performed. When the reproduction key 22a is operated during the catch-up reproduction, the process proceeds from step S71 to step S73, and an additional OSD signal is given to the reproduction system 18. A warning message “Key operation is invalid” is additionally displayed on the display 36. If the playback scene catches up with the actual broadcast scene, YES is determined in step S65, and the playback system 18 is commanded to stop playback in step S67, and the tuner 32 of the television receiver 30 is currently selected in step S69. Command the channel selection. As a result, the tuner 32 selects the same channel, and the program for which real-time recording has been performed is continuously displayed on the display 36.
[0031]
The reproduction operation of the recorded program when the program recording reservation is set is as shown in FIG. If real-time recording is not performed, NO is determined in step S47 of FIG. Therefore, when the stop key 22e is operated, the reproduction is stopped in step S37 of FIG. 4, and when the fast forward key 22b or the rewind key 22c is pressed, fast forward reproduction or rewind reproduction is performed in step S41 of FIG. It is. Such a key operation related to reproduction is valid after the reserved recording is started.
[0032]
FIG. 7 shows the operation when real-time recording is performed with the program recording reservation set and the program being recorded is played back. When a recording reservation is made, a check time is set in step S9 of FIG. The set check time is 20 minutes before the scheduled recording start time. If the current time is before the check time, if the broadcast time is before the check time, NO is determined in step S53 of FIG. At this time, any key operation related to the reproduction of the program recorded in real time is valid.
[0033]
When the current time becomes the check time, YES is determined in step S53 of FIG. 5, and the catch-up playback speed and the catch-up playback start time are calculated by the processes in steps S55 and S59. However, as long as the current time is before the catch-up playback start time, NO is determined in step S59 in FIG. 5, and key operations related to playback of the program being recorded are still valid. When the current time reaches the catch-up playback start time, YES is determined in step S59, and catch-up playback at the catch-up playback speed described above is started in step S61. In step S63, a predetermined warning message is OSD displayed.
[0034]
If the playback scene catches up with the actual broadcast scene by catch-up playback, YES is determined in step S65, playback is stopped in step S67, and the same broadcast channel is selected by the tuner 32 on the television receiver 30 side in step S69. Bureau. The same broadcast program is displayed on the display 36. Note that real-time recording continues even after playback is stopped.
[0035]
When the current time becomes the reserved recording start time, YES is determined in step S13 of FIG. Since real-time recording is ongoing, it is also determined as YES in step S17, and after real-time recording is ended in step S19, reserved recording is started in step S21.
[0036]
Thus, when real-time recording and playback of a program being recorded are performed in parallel with a recording reservation set, the program being played is fast-forwarded based on the reserved recording start time and the current time. Therefore, it is possible to reproduce a program that is performing real-time recording without breaking the flow of the story.
[0037]
In this embodiment, a hard disk is used as a recording medium, but a disk recording medium such as a magneto-optical disk may be used instead.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is an illustrative view showing one example of an operation panel.
FIG. 3 is a flowchart showing a part of the operation of the CPU during recording.
FIG. 4 is a flowchart showing a part of the operation of the CPU during reproduction.
FIG. 5 is a flowchart showing another part of the operation of the CPU during reproduction;
6 is a timing chart showing a part of the operation of the embodiment in FIG. 1; FIG.
FIG. 7 is a timing chart showing another part of the operation of the embodiment in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Hard disk video recorder 12, 32 ... Tuner 14 ... Recording system 16 ... Hard disk 18 ... Reproduction system 20, 38 ... CPU

Claims (4)

First recording start means for starting recording of the first broadcast program in response to a real-time recording operation; and playing back the first broadcast program in response to a playback operation when the first broadcast program is being recorded. Reproduction means,
A comparison means for comparing the broadcast start time of the second broadcast program reserved for recording with the current time;
Based on the comparison result of the comparison means, the first broadcast program is fast-forwarded and reproduced at a speed at which the reproduction scene of the first broadcast program catches up with the real-time broadcast scene of the first broadcast program before the broadcast start time. Fast-forward playback means,
Recording end means for ending the recording of the first broadcast program after the playback scene of the first broadcast program catches up with the real-time broadcast scene;
A reproduction end means for ending reproduction of the first broadcast program before the broadcast start time after the recording end means finishes recording the first broadcast program; and the second when the broadcast start time is reached A recording / reproducing apparatus comprising second recording start means for starting recording of a broadcast program.  Detection means for detecting a time difference from the playback scene to the broadcast scene in real time when a predetermined time before the broadcast start time is reached, and the fast-forward playback speed is determined based on a detection result by the detection means The recording / reproducing apparatus according to claim 1, further comprising a determination unit that performs the determination.   3. The recording / reproducing apparatus according to claim 1, further comprising an invalid unit that invalidates the reproduction operation when the fast-forward reproduction is performed by the fast-forward reproduction unit.   4. The recording / reproducing apparatus according to claim 1, further comprising generating means for generating a predetermined warning when the fast-forward reproduction is performed by the fast-forward reproduction means.

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